Download the FakeCam script from Gumroad.
Unzip the downloaded file.
Place the unzipped .jsx file and the Duik folder into your After Effects Scripts folder. This is usually located in Program Files\\Adobe\\Adobe After Effects <version>\\Support Files\\Scripts\\ScriptUI Pannels
on Windows, or Applications/Adobe After Effects <version>/Scripts/ScriptUI Pannels
on Mac.
Restart After Effects.
Go to Window > FakeCam.jsx
to run the script.
If you didn't select any layers before running the script, a dialog box will appear asking you to enter the number of levels you want to create. Enter a number and click "OK".
The script will create a 2D Multiplane Camera using the selected layers or the specified number of levels.
I hope this tutorial helps you and your users get the most out of the FakeCam script. If you have any questions or need further clarification on any of the steps, don't hesitate to ask!